Improvement in machines for securing the ends of strips of sheet metal together



UNITED STATES PATENT OFFICE.

W. J. GORDON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO J. S. MASON &OO., OF SAME PLACE.

IMPROVEMENT IN MACHINES FOR SECURING THE ENDS OF STRIPS OF SHEET METALTOGETHER.

Specification forming part of Letters Patent No. 56,494, dated Jnly 17,1866.

To all whom 'it may concerur Be it known that I, WiLLrAM J. GORDON, ofPhiladelphia, Pennsylvania, have invented an Improved Machine forSecuring the Ends of Metal Strips Together; and I do hereby declaret-heV following to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, and to the letters ofreference marked thereon.

My invention consists of certain mechanism, fully described hereinafter,for securing together the ends of metal strips-such, for instance, asthose used in the manufacture of blackin gboxes.

In order to enable others skilled in the art to make and use myinvention, I will now proceed to describe its construction andoperation.

On reference to the accompanying drawings, which form a part of thisspecification, Figures 1 and 2 are front elevations of my improvedmachine for securing the ends of metal strips together, .showing1 theoperating` parts in different positions. Fig. 3 is a vertical section onthe line 1 2, Fig. 1; Fig. 4, a vertical sectionv of part of the machineon the line 3 4, Fig. 2; Figs. 5 and 6, detached views drawn to anenlarged scale; and Fig. 7, a sectional view, showing the ends of a bandor strip secured together. Y

Similar letters refer to similar parts throughout the several views.

A is the base of the machine, to which are secured the standards B B',and in the upper ends of the same turns a shaft, O.

On guides in the standard B `slides a block, D, through the upper end ofwhich passes a shaft, E, and on the outer end of the latter is a disk,F, on the edge of which are two l-ugs or projections, a a'.

To the face of the sliding block D is secured a detachable disk, G, onwhich is an annular llange, b, and in the said disk is a circularopening for the reception of the disk F, the edge of the latterprojecting slightly above the edge of the disk G, as shown in thedrawings.

On the outer end of the shaft G is a roller, H, on the edge of which4 isan annular tlan ge, c, the latter being of such a Width as to litreadily between the lugs d et of the disk F.

Against the under side of the sliding block D bears the short arm of alever, I, hung to a pin on the base-plate A, the said arm being of thepeculiar shape shown in Figs. 1 and 2; and on the long arm of the leveris a pin, e, which projects into a slot, ar, in a rod, J, the latterbeing jointed to an arm, K, which is secured to the shaft E.

The parts are brought to the position shown in Figs. 1 and 3, and astrip, X, of metal, the ends' m' of which are to be secured together, ispassed around the disk G, the edge of the strip bearing against theflange b, while its ends extend over the projections a a on the disk F.A rotary motion in the direction of its arrow is then imparted to theroller H, and the long arm of the lever I is depressed, so as to raisethe block l). As the rollers G and H are brought together the llange cwill be introduced between the lugs a a', and both ends of the stripwill be cut between the edges of the flange and the inner edges of thelugs, and that portion of the strip between the two slits thus made willbe forced down between the lugs a, a onto the edge of the roller F, asshown in Figs. 5 and 7 a portion, y, ofthe end a: being thus carriedbelow the under surface of the end m.

As the long arm of the lever is farther depressed the motion of theblock I), owing to the peculiar shape of the short arm of the lever,will be arrested, while the pin e will be brought to the end of the slotm and the rod J will be drawn downward, the roller F, during themovement of the lever, being caused to turn in the direction of itsarrow.

As the rollers H and F revolve the strip X will be carried with them,and the depressed portion y of the endxwill be compressed and rolledbeneath the flange c until its width is so increased that its edges willproject beyond the edges of the opening in the end x', the withdrawal ofthe portion y through the opening in the end x being thus prevented, sothat the ends of the strip are securely fastened together. The long armof the lever is now raised, so as to lower the block D and turn theroller F back to its rst position, when the strip X may be removed.

It will be seen that the disk G determines the exact size of the bandformed by joining the ends of the strip. When it is desired,

therefore, to make e band of :t different size, the disk is removed, and:1- larger or smaller one, according to the size ofthe bend required,secured in its platee. If desired, however, the disk may he dispensedwith.

Other devices for elernting the bloek I) and turning the roller F muy besubstituted for those described. The number of iianges on the roller Hand projections on the roller F may also beinereased when the ends ofbroad strips of metai have to be secured together.

I claim as my invention and desire to secure by Letters Patent- Intestimony whereof I have signed my name to this specification in thepresence of two subseribing witnesses.

IV. J GORDON. Witnesses:

CHARLES E. FOSTER, JOHN WHITE.

